These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Alphard is the name of a star in the middle of the Hydra constellation. It is also known as the "Heart of the Snake" because of that (thus, no wonder Alphard commands the "Snakes"). "Al-Phard" also means "the lonely one" in Arabic because it's the brightest star in the whole sky sector.
Before even that, "Canaan" referred to Phoenicians (you can even hear the phonetic similarity) in their own language. Phoenicians were the supreme mariners and traders of their time and founded Carthage, The Rival and Worthy Opponent to Ancient Rome. They also invented the alphabet.
Hilarious in Hindsight: In first episode, on a tv screen the TVB Jade watermark is displayed on the further top-right. In summer 2013, the watermark was moved their in Real Life as part of the switch away from standard defintion.
Les Yay: Canaan and Maria. They flirt a lot, indeed. At one point, Maria even delivers lines that can easily be interpreted as a confession of love.
Les Yay Shipping: There are quite a few fans of Alphard/Canaan, not to mention Maria/Canaan.